var a = 1
let b = 8768
var c = 8456
console.log(a + b)
var a = 1
let bs = 8768
var c = 8456
console.log(a + b)
var a = 1
let bf = 8768
var c = 8456
console.log(a + b)

console.log(a)
let array = [1, 2, 3, 4, 5]
for (let index = 0; index < array.length; index++) {
  const element = array[index]
  console.log(index)
  console.log(index)
  console.log(index)
}
第一次
